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The first column is the compositional layers,distinguished by the ingredients that make each layer.
The second column is the physical layers, distinguished by the solidity and movement of each layer
is the theory that continents can drift apart from one another and have done so in the past
is the process by which new oceanic lithosphere is created as older materials are pulled away
the theory that the Earth's lithosphere is divided into tectonic plates that move around on top of the asthenosphere
the boundary between two tectonic plates that are sliding past each other horizontally
the type of stress that occurs when an object is squeezed as when two techtonic plates collide.
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